<?php

/**
 * JPGraph v4.0.3
 */

namespace lemon\JpGraph\Plot;

use lemon\JpGraph\Util;

/**
 * File:		   JPGRAPH_PLOTLINE.PHP
 * // Description: PlotLine extension for JpGraph
 * // Created:	   2009-03-24
 * // Ver:		   $Id: jpgraph_plotline.php 1931 2010-03-22 15:05:48Z ljp $
 * //
 * // @class PlotLine
 * // Data container class to hold properties for a static
 * // line that is drawn directly in the plot area.
 * // Useful to add static borders inside a plot to show for example set-values
 * //
 * // Copyright (c) Asial Corporation. All rights reserved.
 */
class PlotLine
{
	public $scaleposition;
	public $direction			= -1;
	protected $weight			= 1;
	protected $color			 = 'black';
	private $legend			  = '';
	private $hidelegend		  = false;
	private $legendcsimtarget	= '';
	private $legendcsimalt	   = '';
	private $legendcsimwintarget = '';
	private $iLineStyle		  = 'solid';
	public $numpoints			= 0; // Needed since the framework expects this property

	public function __construct($aDir = HORIZONTAL, $aPos = 0, $aColor = 'black', $aWeight = 1){
		$this->direction	 = $aDir;
		$this->color		 = $aColor;
		$this->weight		= $aWeight;
		$this->scaleposition = $aPos;
	}

	public function SetLegend($aLegend, $aCSIM = '', $aCSIMAlt = '', $aCSIMWinTarget = ''){
		$this->legend			  = $aLegend;
		$this->legendcsimtarget	= $aCSIM;
		$this->legendcsimwintarget = $aCSIMWinTarget;
		$this->legendcsimalt	   = $aCSIMAlt;
	}

	public function HideLegend($f = true){
		$this->hidelegend = $f;
	}

	public function SetPosition($aScalePosition){
		$this->scaleposition = $aScalePosition;
	}

	public function SetDirection($aDir){
		$this->direction = $aDir;
	}

	public function SetColor($aColor){
		$this->color = $aColor;
	}

	public function SetWeight($aWeight){
		$this->weight = $aWeight;
	}

	public function SetLineStyle($aStyle){
		$this->iLineStyle = $aStyle;
	}

	public function GetCSIMAreas(){
		return '';
	}

	/**
	 * PRIVATE METHODS.
	 *
	 * @param mixed $graph
	 */
	public function DoLegend($graph){
		if (!$this->hidelegend) {
			$this->Legend($graph);
		}
	}

	// Framework function the chance for each plot class to set a legend
	public function Legend($aGraph){
		if ($this->legend != '') {
			$dummyPlotMark = new PlotMark();
			$lineStyle	 = 1;
			$aGraph->legend->Add(
				$this->legend,
				$this->color,
				$dummyPlotMark,
				$lineStyle,
				$this->legendcsimtarget,
				$this->legendcsimalt,
				$this->legendcsimwintarget
			);
		}
	}

	public function PreStrokeAdjust($aGraph){
		// Nothing to do
	}

	// Called by framework to allow the object to draw
	// optional information in the margin area
	public function StrokeMargin($aImg){
		// Nothing to do
	}

	// Framework function to allow the object to adjust the scale
	public function PrescaleSetup($aGraph){
		// Nothing to do
	}

	public function Min(){
		return [null, null];
	}

	public function Max(){
		return [null, null];
	}

	public function _Stroke($aImg, $aMinX, $aMinY, $aMaxX, $aMaxY, $aXPos, $aYPos){
		$aImg->SetColor($this->color);
		$aImg->SetLineWeight($this->weight);
		$oldStyle = $aImg->SetLineStyle($this->iLineStyle);
		if ($this->direction == VERTICAL) {
			$ymin_abs = $aMinY;
			$ymax_abs = $aMaxY;
			$xpos_abs = $aXPos;
			$aImg->StyleLine($xpos_abs, $ymin_abs, $xpos_abs, $ymax_abs);
		} elseif ($this->direction == HORIZONTAL) {
			$xmin_abs = $aMinX;
			$xmax_abs = $aMaxX;
			$ypos_abs = $aYPos;
			$aImg->StyleLine($xmin_abs, $ypos_abs, $xmax_abs, $ypos_abs);
		} else {
			Util\JpGraphError::RaiseL(25125); //(" Illegal direction for static line");
		}
		$aImg->SetLineStyle($oldStyle);
	}

	public function Stroke($aImg, $aXScale, $aYScale){
		$this->_Stroke(
			$aImg,
			$aImg->left_margin,
			$aYScale->Translate($aYScale->GetMinVal()),
			$aImg->width - $aImg->right_margin,
			$aYScale->Translate($aYScale->GetMaxVal()),
			$aXScale->Translate($this->scaleposition),
			$aYScale->Translate($this->scaleposition)
		);
	}
}
